gcloud auth print-access-token

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NAME
gcloud auth print-access-token - print an access token for the specified account
SYNOPSIS
gcloud auth print-access-token [ACCOUNT] [GCLOUD_WIDE_FLAG …]
DESCRIPTION
Print an access token for the specified account. See RFC6749 for more information about access tokens.

Note that token itself may not be enough to access some services. If you use the token with curl or similar tools, you may see permission errors similar to "API has not been used in project 32555940559 before or it is disabled.". If it happens, you may need to provide a quota project in the "X-Goog-User-Project" header. For example, 

curl -H "X-Goog-User-Project: your-project" -H "Authorization: Bearer $(gcloud auth print-access-token)" foo.googleapis.com

The identity that granted the token must have the serviceusage.services.use permission on the provided project. See https://cloud.google.com/apis/docs/system-parameters for more information.

EXAMPLES
To print access tokens: 
gcloud auth print-access-token
POSITIONAL ARGUMENTS
[ACCOUNT]
Account to get the access token for. If not specified, the current active account will be used.
GCLOUD WIDE FLAGS
These flags are available to all commands: --access-token-file, --account, --billing-project, --configuration, --flags-file, --flatten, --format, --help, --impersonate-service-account, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity.

Run $ gcloud help for details.

NOTES
These variants are also available: 
gcloud alpha auth print-access-token

gcloud beta auth print-access-token